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O-LevelBiologyEnzymes5090/11 · May/June 2013 · Q41 Mark

The diagram represents how an enzyme molecule changes in shape. [Figure showing a key-shaped molecule changing to a different, less defined shape.] What explains this change?

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

AIt has been cooled to 5°C.
BIt has been heated to 70°C.
CIt has been placed in a concentrated salt solution.
DIt has been placed in a dilute salt solution.

✓ Correct answer

B: It has been heated to 70°C.

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About this question

Topic
Enzymes, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source
O-Level Biology, May/June 2013 Paper 1 Variant 1, question 4.

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